DeepSeek-R1
Open SourceDeepSeek · 2025-01
Open-weight reasoning model with Chain-of-Thought, rivaling top proprietary models.
Quick Facts
Parameters
671B total (37B active per token)
Context Window
128K tokens
Modalities
text
Open Source
Yes
License
MIT
Pricing
Free / API from $0.14/M tokens
Released
2025-01
Developer
DeepSeek
About
DeepSeek-R1 is a groundbreaking open-weight reasoning model developed by DeepSeek (深度求索). It features 671 billion total parameters with 37 billion activated per token using Mixture-of-Experts architecture. R1 introduces explicit Chain-of-Thought reasoning, demonstrating performance comparable to OpenAI's o1 on mathematical reasoning, coding, and scientific problem-solving. Its open-weight release under a permissive license sparked widespread adoption in the AI community. At a fraction of the cost of proprietary alternatives, DeepSeek-R1 democratized access to advanced reasoning AI.
Strengths
- +Open-weight with permissive MIT license
- +Chain-of-Thought reasoning rivaling top proprietary models
- +Exceptional cost efficiency (fraction of competitors' API cost)
- +Strong math and coding performance
Weaknesses
- −Text-only model, no vision or multimodal
- −Less refined conversational ability
- −Server availability can be inconsistent
- −Documentation primarily in Chinese
Best For
Self-hosting advanced reasoning AI on own infrastructure
Mathematical problem-solving and proofs
Competitive coding and algorithm challenges
Cost-sensitive AI integration at scale
Pricing
Free Chat
$0
- Unlimited DeepSeek chat
- DeepSeek-R1 model
- File uploads
API
From $0.14/M tokens
- R1 and V3 API
- Rate limits
- Fine-tuning available
Self-Hosted
Free (open-weight)
- Full model weights
- Custom deployment
- Unlimited usage
Benchmarks
| Benchmark | DeepSeek-R1 | Competitor |
|---|---|---|
| AIME 2025 | 79.8% | o1 (OpenAI): 79.2% |
| MATH-500 | 97.3% | o1: 96.4% |
Technical Specs
Parameters
671B total (37B active per token)
Context Window
128K tokens
Modalities
text
Languages
Open Source
Yes
License
MIT
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